What occurs when two waves traveling along the same medium meet and cancel each other out

Scenario: the economy of country y has been in an economic downturn for the last several months. recently, businesses have invested in new technologies in order to produce the goods that consumers are demanding within the nation's own borders. the government has removed regulations to allow producers and consumers to have more financial freedom. as a result, consumer spending has increased and the economy has begun to improve. use the drop-down menus to complete the sentences. according to the information presented about country y, the classical economic concept of ( the invisible hand, consumer efficiency, government regulations) can be seen. the economic events of country y demonstrate the idea of laissez faire because the government (did, did not) intervene in economic events.

Choose one of these concerns and write a short paragraph about its impact on africa. what has caused this problem to occur, and how has it impacted people who live there?

Which statement is a good description of a model? a) models are a description of nature based only on one or two variables. b) models are testable ideas but they are not very to most people. c) models are a description of nature that predicts more accurately than real events. d) models are an approximiation of a real system that omits all but most essential variables in a system.